Tumbler Silicone Boot

The Darling Effect - Tumbler Silicone Boot The Darling Effect No-Slip Tumbler Boot is the perfect addition to your tumbler. Made from soft, durable silicone material, this silicone boot will fit securely to the bottom of 30-40 oz tumblers. Experience a quiet, soft landing when you set your tumbler down, thanks to the boot's secure grip - giving you peace of mind that your tumbler is protected from unwanted dents or dings. Complete the set with our tumbler fanny pack for stylish, safe storage.